newmann



H. NEWMANN.

TURRET TOOL POST FOR ENGINE LATHES.

APPLICATION FILED MAY 3. [916.

1 1'95, 3 90. Patented Aug. 22, 1916.

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2 SHEET I/ lnIII V A TTOR/VEV H. NEWMAN-N. TURRET TOOL POST FOR ENGINE LATHES. APPLICATION FILED MAY 3, 19I6- 1,195,390. Pa tentedAug. 1915.

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HERMANN NEWMANN, or New YORK, 1v. Y.

TUBE/ET TOOL-POST FOR ENGINE-LATI-IES.

Application filed May 3, 1916. Serial No. 95,021.

To all whom it may concern:

Be it known that I, HERMANN NEWMANN, a citizen of Germany, and a resident of New York city, in the county of Bronx and State of New York, have invented certain new and useful Improvements in Turret Tool- Posts for Engine-Lathes, of which the following is a specification.

This invention relates to a turret tool post for engine lathcs of the kind described in Patent #1,031,956 granted to me July 9th, 1912-, and has for its object, to simplify the construction of the tool post, and permit a quick and accurate adjustment of the tool head in a vertical direction.

In the accompanying drawings: Figure 1 is a vertical longitudinal section on line 1--1 Fig. 4, of a turret tool post embodying my invention; Fig. 2, a side elevation partly in section thereof; Fig. 3, a right hand end View; Fig. 4, a plan, partly in section; Fig. 5, a vertical cross section on line 5-5 Fig. 4; Fig, 6, a section through the tool head on line (36 Fig. 3, and Fig. 7 a left hand end view of the spindle and adjoining parts.

The cylindrical block 10 of the tool post is provided with an axial bore, that accommodates a horizontal spindle 11, which is of a length to project a distance beyond both ends of the block. Sidewise of the axial bore, there extends through the block, a vertical bore adapted for the reception of a' screw bolt 12 which entirely clears spindle 11. The lower threaded end of bolt 12, is engaged by a nut 13, the head 14 of which, in turn, engages the slide rest 15. The

- shank of the nut is, above the slide rest, en-

compassed by a tubular sleeve 16, countersunk into block 10, and threaded to the same. To raise or lower block 10 together with spindle 11, bolt 12 is turned by means of its head 17, so as'to slightly slacken nut 13, the latter is withdrawn from the slide rest, the nut 13 and sleeve 16, are adjusted to the height desired, and then the nut is slipped back into the slide rest and tightened up by turning the bolt. It will be seen, that inas much as the path of bolt 12 does not traverse the path of spindle 11, all provisions for effecting a clearance between such parts are entirely obviated, while moreover, the vertical movement of the bolt is in no wise limited by the spindle.

The right hand end of block 10, is provided with a central beveled projection 18,

which is countersunk within a correspondingly recessed collar 19 formed on the back of the tool head 20. Spindle 11, passes through this collar into the back of head 20 to which it is rigidly secured by means of a flange 21. Head 20, is provided with a plurality of seats 22 for the accommodation of the tools, and in addition thereto with one seat of peculiar construction, which is used for the reception of the cutting off tool. The beveled shank 23 of this tool engages an undercut groove 24 of head 20. In proximity to groove 24, head 20 is apertured for the reception of a rotatable stud 25. At its back, this stud is provided with a countersunk flange 26, and a squared end 27. At its front, the stud extends a distance beyond the face of head 20 and is here provided with an eccentric contracted section or neck 28, and with a concentric flange 29, at the end of the neck. After the tool has been fitted into the groove, stud 25 is so turned, that its eccentric neck will jam tightly against the tool shank, while flange 29 will be projected over such shank. In this way, the tool is securely clamped to head 20, and may be readily released and relocked whenever a different adjustment is desired.

Novel means are provided for so rotating spindle 11, that the tool desired will be presented to the work. These means consist of a pair of nuts 30, 31 mounted on the threaded end of spindle 11, that protrudes from the left end of block 10. Nut 30 is encompassed by a ring 32, having a rearwardly extending hub 33, that overhangs nut 31. Hub 33 receives a vertically movable rod 34, the play of which is limited by a pin 35 and slot 36. Rod 34 carries at its lower end, a bit 37 adapted to enter transverse grooves 38 formed on the outer face of nut 31. By operating rod 34 sidewise, nut 31, will be first turned to space it from nut 30, and force it against the inner member of a pair of jam nuts 35 while the further operation of rod 34 will cause spindle 11 to be turned in the manner desired. Collar 19 is provided with a series of teeth 39, which are spaced in accordance with the spacing of the tool seats 22. Teeth 39, are adapted to be engaged by the beveled edge of an axially slidable bolt 40, which is accommodated within a horizontal bore 41 of block 10, and is forced outward by a spring 42 housed within said bore. WVhen spindle 11 is turned by means of rod 34, bolt 40 When engaging the tooth 39, corresponding to the tool to be put into operative position, will indicate to the operator, that the aline- 5 nient desired has been obtained.

I claim: A turret toolpost, comprising a block, :1

horizontal spindle journaled therein, a cutter head carried by the spindle, a, vertical screw bolt extending through the block side- Wise of the spindle, a headed nut carried by the bolt, and a threaded sleeve engaging the block and encompassing the nut.

HERMANN N EWVMANN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

